| Melissa Speed | AFSCME Iowa Council 61 | Undecided | GA90 |
| Mark Joyce | AT & T | Undecided | GA90 |
| Steven Van Steenhuyse | American Planning Association Iowa Chapter | Opposing | GA90 |
| Steven Van Steenhuyse | American Planning Association Iowa Chapter | Withdrawn | GA90 |
| Drew Klein | Americans For Prosperity | Supporting | GA90 |
| Tyler Raygor | Americans For Prosperity | Supporting | GA90 |
| Brad Epperly | Ames Regional Economic Alliance | Undecided | GA90 |
| Dustin Miller | Ames Regional Economic Alliance | Undecided | GA90 |
| Mark Joyce | Boyd Gaming & Dubuque Diamond Jo & Diamond Jo Worth | Undecided | GA90 |
| Jeff Smith | Broadlawns Medical Center | Undecided | GA90 |
| Maggie Smith-Fitzgerald | Broadlawns Medical Center | Undecided | GA90 |
| Matt Fitzgerald | Broadlawns Medical Center | Undecided | GA90 |
| Gary Grant | Cedar Rapids Airport | Undecided | GA90 |
| Larry Murphy | Cedar Rapids Airport | Undecided | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA90 |
| Kate Walton | City of Bettendorf | Undecided | GA90 |
| Madeleine Bradley | City of Bettendorf | Undecided | GA90 |
| Matt Eide | City of Bettendorf | Undecided | GA90 |
| Gary Grant | City of Cedar Rapids | Undecided | GA90 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA90 |
| Emilee Harris-Puricelli | City of Des Moines | Undecided | GA90 |
| Jen Schulte | City of Des Moines | Undecided | GA90 |
| Sydney Gangestad | City of West Des Moines | Undecided | GA90 |
| Tim Coonan | City of West Des Moines | Undecided | GA90 |
| Mark Joyce | Corteva Agriscience | Undecided | GA90 |
| Drew Kamp | Council Bluffs Chamber of Commerce | Undecided | GA90 |
| Clara Wulfsen | Department of Revenue | Undecided | GA90 |
| Ryan Sempf | Dubuque Area Chamber of Commerce | Undecided | GA90 |
| Bill Dix | Fareway Stores, Inc. | Undecided | GA90 |
| Andrea Woodard | Greater Des Moines Partnership | Undecided | GA90 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA90 |
| Dustin Miller | Greater Des Moines Partnership | Undecided | GA90 |
| Jeff Smith | Greater Fort Dodge Growth Alliance | Undecided | GA90 |
| Maggie Smith-Fitzgerald | Greater Fort Dodge Growth Alliance | Undecided | GA90 |
| Matt Fitzgerald | Greater Fort Dodge Growth Alliance | Undecided | GA90 |
| Kate Walton | Grow Clinton County | Undecided | GA90 |
| Madeleine Bradley | Grow Clinton County | Undecided | GA90 |
| Matt Eide | Grow Clinton County | Undecided | GA90 |
| Eric Goranson | Habitat for Humanity of Iowa | Undecided | GA90 |
| Mark Joyce | Hy-Vee, Inc. | Undecided | GA90 |
| Teresa Bomhoff | IA Mental Health Planning Council | Opposing | GA90 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Emily Shields | Iowa Association of Community College Trustees | Undecided | GA90 |
| Jeff Smith | Iowa Association of Community College Trustees | Undecided | GA90 |
| Laurie Wolf | Iowa Association of Community College Trustees | Undecided | GA90 |
| Maggie Smith-Fitzgerald | Iowa Association of Community College Trustees | Undecided | GA90 |
| Matt Fitzgerald | Iowa Association of Community College Trustees | Undecided | GA90 |
| Greta Haas | Iowa Association of Realtors | Supporting | GA90 |
| Jennifer Kingland | Iowa Association of Realtors | Supporting | GA90 |
| Emily Piper | Iowa Association of School Boards | Opposing | GA90 |
| Michelle Johnson | Iowa Association of School Boards | Opposing | GA90 |
| Mike Rozenboom | Iowa Bankers Association | Undecided | GA90 |
| Sharon Presnall | Iowa Bankers Association | Undecided | GA90 |
| Joe Murphy | Iowa Business Council | Supporting | GA90 |
| Kellie Paschke | Iowa Cattlemen's Association | Undecided | GA90 |
| Kelly Meyers | Iowa Cattlemen's Association | Undecided | GA90 |
| Troy Skinner | Iowa Cattlemen's Association | Undecided | GA90 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA90 |
| Dustin Miller | Iowa Chamber Alliance | Undecided | GA90 |
| Nick Laning | Iowa Chapter of the Association of Public Safety Communications Officials (APCO) | Undecided | GA90 |
| Threase Harms | Iowa Chapter of the Association of Public Safety Communications Officials (APCO) | Undecided | GA90 |
| Haley Hook | Iowa Department of Agriculture & Land Stewardship | Undecided | GA90 |
| Deanna Triplett | Iowa Economic Development Authority | Undecided | GA90 |
| Nick Laning | Iowa Emergency Management Association | Undecided | GA90 |
| Threase Harms | Iowa Emergency Management Association | Undecided | GA90 |
| Kevin Kuhle | Iowa Farm Bureau Federation | Supporting | GA90 |
| Matt Gronewald | Iowa Farm Bureau Federation | Supporting | GA90 |
| Matthew Steinfeldt | Iowa Farm Bureau Federation | Supporting | GA90 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Opposing | GA90 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Undecided | GA90 |
| Alan Kemp | Iowa League of Cities | Opposing | GA90 |
| Daniel Stalder | Iowa League of Cities | Opposing | GA90 |
| Robert Palmer | Iowa League of Cities | Opposing | GA90 |
| Andy Conlin | Iowa Manufactured Housing Association | Supporting | GA90 |
| Larry Murphy | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Opposing | GA90 |
| Larry Murphy | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Withdrawn | GA90 |
| Larry Murphy | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Undecided | GA90 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA90 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA90 |
| Mike Heller | Iowa State Association of Assessors | Undecided | GA90 |
| Jamie Cashman | Iowa State Association of Counties | Opposing | GA90 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA90 |
| Kristi Harshbarger | Iowa State Association of Counties | Opposing | GA90 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA90 |
| Lucas Beenken | Iowa State Association of Counties | Opposing | GA90 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA90 |
| William Peterson | Iowa State Association of Counties | Opposing | GA90 |
| William Peterson | Iowa State Association of Counties | Undecided | GA90 |
| Jamie Cashman | Iowa State Association of County Auditors | Opposing | GA90 |
| Jamie Cashman | Iowa State Association of County Auditors | Undecided | GA90 |
| Kristi Harshbarger | Iowa State Association of County Auditors | Opposing | GA90 |
| Kristi Harshbarger | Iowa State Association of County Auditors | Undecided | GA90 |
| Lucas Beenken | Iowa State Association of County Auditors | Opposing | GA90 |
| Lucas Beenken | Iowa State Association of County Auditors | Undecided | GA90 |
| William Peterson | Iowa State Association of County Auditors | Opposing | GA90 |
| William Peterson | Iowa State Association of County Auditors | Undecided | GA90 |
| Jamie Cashman | Iowa State Association of County Supervisors | Opposing | GA90 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA90 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Opposing | GA90 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA90 |
| Lucas Beenken | Iowa State Association of County Supervisors | Opposing | GA90 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA90 |
| William Peterson | Iowa State Association of County Supervisors | Opposing | GA90 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA90 |
| Tom Sands | Iowa Taxpayers Association | Supporting | GA90 |
| Doug Struyk | Iowa Veterinary Medical Association | Undecided | GA90 |
| Jennifer Dorman | Iowa Veterinary Medical Association | Undecided | GA90 |
| Jim Carney | Iowa Veterinary Medical Association | Undecided | GA90 |
| Chris Hagenow | Iowans for Tax Relief | Supporting | GA90 |
| Jake Highfill | Iowans for Tax Relief | Supporting | GA90 |
| Victoria Sinclair | Iowans for Tax Relief | Supporting | GA90 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA90 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA90 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA90 |
| Kellie Paschke | Marion County Board of Supervisors | Opposing | GA90 |
| Kelly Meyers | Marion County Board of Supervisors | Undecided | GA90 |
| Kelly Meyers | Marion County Board of Supervisors | Opposing | GA90 |
| Troy Skinner | Marion County Board of Supervisors | Undecided | GA90 |
| Troy Skinner | Marion County Board of Supervisors | Opposing | GA90 |
| John Hall | Marshalltown Area Chamber of Commerce | Undecided | GA90 |
| Ben Hammes | Master Builders of Iowa | Undecided | GA90 |
| Julie Smith | Master Builders of Iowa | Undecided | GA90 |
| Angela Caulk | Metropolitan Coalition | Undecided | GA90 |
| Logan Murray | Metropolitan Coalition | Undecided | GA90 |
| Noah Tabor | Metropolitan Coalition | Undecided | GA90 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA90 |
| Amy Campbell | Polk County - Board of Supervisors | Undecided | GA90 |
| Craig Patterson | Polk County - Board of Supervisors | Undecided | GA90 |
| Brad Epperly | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Dustin Miller | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Dave Daughton | Rural School Advocates of Iowa | Opposing | GA90 |
| Margaret Buckton | Rural School Advocates of Iowa | Opposing | GA90 |
| Dave Daughton | School Administrators of Iowa | Opposing | GA90 |
| Michael Triplett | Self Storage Association | Undecided | GA90 |
| Gary Grant | Urban County Coalition | Undecided | GA90 |
| Larry Murphy | Urban County Coalition | Undecided | GA90 |
| Margaret Buckton | Urban Education Network of Iowa | Opposing | GA90 |
| Brandon Geib | Wellmark, Inc. | Undecided | GA90 |
| Scott Sundstrom | Wellmark, Inc. | Undecided | GA90 |